Friction-clutch.



E.' R. WHITNEY.

FRIGTION CLUTCH.

PATENTED MAYM. 19ml APPLIOATIUN FILED NOV. 9, 1905.

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`lmvewtol No. 353.849. PATENTED MAY 14, 1907. B. R. WHITNEY.

FRICTION GLUTGH. APPLIOATION FILED Nov. 9. 190s.

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UNiTEn saT r TNT orifice.

I EDDY R. WHITNEY, OF LYNN, MASSACHUSETTS ASSIGNOR TO GENERAL I To all teli/om, t may concern:

ELECTRIC C(.')MPANY, A CORPORATION OF NEW YORK.

FRICTION=CLUTCH.

Be it known that I, EDDY R. WHITNEY, a citizen of the United States,' residing at Lynn, county of Essex, State of Massachusetts,'have invented certain'new. and use' `ful Improvements in Friction-Clutches, of

which the following is a specification.

The present .invention relates to power transmitting devices and more particularly to friction clutches, and the object of the invention is to provide a simple and highly efficient device of this character having provisions wh'ereby the power for forcing the driving and driven clutch members into and out of engagement may be derived from the power transmitted instead of, as has been the usual practice heretofore, by the manual effort of the operator, or from other extraneous source of energy.

-vide a friction clutch in which In carrying my invention into eiiect I pro the driving or driven member is adapted to be moved into or out of engagement withthe other member,

. disengaged.

and on the driving member I mount a clutch actuating part so as to revolve positively therewith but capable of independent movement, and on some stationary part I mount a wedge or cam-shaped projection which is adapted to. cooperate with` the clutch actuating part as it revolves with the driving mem! ber to force the latter along its pathy of inde-l pendent movement. The yclutch actuating part is connected by suitable means to one of the clutch members so that its ,independent movement effects an axial movement thereofinto or out'of friction'al engagement with the other clutch member. By positioning the stationary projection and the actuating part so that the`latter engages the projection on one side of its leading A'apex the clutch mem.- bers will be caused to engage without further attention on'the part of the operator, and by `a slight change 'in the relative positions of the stationary projection and the revolving actuating part so as to cause the latter to engage tlie former on the other side ;of its apex, the clutch members will be automatically 'llie positioning of) these parts may be accomplished byhand, ,electra magnets, or other simple means. 4

;For a more complete understandingidf the .invention reference may beyljadrftptli'e following detailed description anditheaeeenipany- Specification of Letters Patent. Application filed November 9, 1905. Serial No. 286,488.

Patented Mayt, 1907.

ing drawings forming a part of this specification in which, l 55 Figure 1 is a part side elevation and part longitudinal section of a reversing counter shaft with a friction clutch at each end; Fig. 2 is a cross section of the same taken on line 2-2 of Fig. 1; Fig. 3 is across section on line 6o 3-3; Figs. '4, 5 and 6V are enlarged axial sections showing the clutch actuating part in different positions Fig. 7 is a cross section on line 7 7 of Fig. 1; Fig. 8 is a detail view showin the connection between the clutch 65. actuatiiig part andthe rotating quill; Fig. 9 is a diagram of the electrical circuit for Aenergizing the magnets; Fig. 10is a part elevation and part axial section of a modified form of my and Fig. 1l is a detal tuating part thereof.

In the construction shown in Figs. 1 to 8 there are two clutch pulleys 1 and 2 adapted i to be positively driven in opposite directions, 7 5 a centrally loc-ated cone pulleyB adapted to be coupled with either of the driving ulleys 1, 2, clutch-actuating solenoids 4 and) 5 (11S-1 posed on opposite sides ofthe driven cone pulley 3 and hangers 6 and 7 by Which'the de- 8o vice is supported from a fixed support. The clutch pulleys 1, 2 arem'ade cup-shape with conical internal periplieies 8 which serve as friction. surfaces and are freely journaled u on a tie rod 9 provided at its ends with 85 t irust collars 10. The open side of each-of view of the clutch acthe pulleys is closed by a disk lllconr'iected by means of a key 13 to a quill 14 ljournaled j in a bearing 15 on lthe hanger.' A hollow 9o shaft 16 journaled in quills 14 extendsV nearly thereto bv screws 12 and rigidly connected .the entirelength of thetie rod 9, and has rig-f 'J i' idly connectedtoeach end a malel clutc inemb er 17 with a conical periphery'lS adapted to make frictional 'contactwith' the inter- 95 nal peri hery 8 of the driving .pulley when the shaft 1,6 is moved axially. The 'driven cone pulley 3 is loosely mounted'upon the center of the hollow Ashaft 16 butheld from v axial movement' therewith by screws 19 car-4 -roo ried by the hub20 ofthe pulley, extendi u throughlongitudinal,slots 21\` in the shaft am'4 'engaging atytheir inner-en ls a peri heral groove 22 turned in the 'fmiddle fof 'it ie tie' rodi).V i Q 1' The clutch actuating solenoidsel, -are car-f:

clutch applied to a motor drive; 7o'

ried in circular erooves formed in the en larged inner ends of the bearings 15. solenoid armatures 23., 24 are disk-shaped I'and each is rigidly connected to an axially 'gjmovable sleeve 25'mounted on the hollow shaft 16 and havin at its outer end, as `'shown in Fig. 8, longitudinal slots 26 for en-y ieather projections 2'( on the inner `eind or the adjacent quill 14 so that 1t may fo move freely in an axial direction but is pos1- tively rotated With the uill. l

@n the internal perip iery of the enlarged inner ends of 'the bearings 15 are rigid Cain or Wedge-shaped projections 28, and on the exi terna-l, peripheries of the sleeves 25 are corres ending projections 29 which, when" the seeves arein retractedpositibna'see Fig. 1,

travel out ci the path of the fixed projectlons- 28, but upon excitation 'of a solenoid its arma-V zo ture is, drawn thereto so that the point of the revolvingl projections 29 'on the armature crosses t e plane in which the point of the stationary projection 28 lies, see Fig. 4, and

n further axial movement of thesleeve is ei'- z 5 fected by the wedging action of the projec tions 2S land 29 upon each other as thelatteris carried past thetorinerby its connection with the power driven part, see Fig. 5. v

In order tov transmity the axial movement of 3o a sleeve 25`to the hollowr shaft 16 after the former has been moved ireelyby its solenoid to bring-the projection 29 intooperative position with relation to projeetionQS, the inner-endfof the sleeve is provided on its .internal periphery With lugs SGfWhich travel in a groove 31 turned in .the periphery oi the hol low' shaft 16 and 'having aividth in excess of the Width of the lugs corresponding to the free axial movement of the sleeve so that at .lo the end oi the free movement of `the latter,

lugs tvill engage theopposite shoulder ofv 4the groove 31 and cause the shaft 16 tothere. after partake of the axial movement of the sleeve. 4 n

415 Eachgsleeve is normally pressed away from its sler'joidbya helical spring'surrounding the i'nner end of the corres ending quillv.

i4 and abutting at one end against the bearing 15 and the othe'ragainst theia-nged end 5o 33rd1 the sleeve 251]/ j When it is' desired to uncouple thev clutch excitation oi thes'olenoid is discontinued and the armatureniov away therefrom under the recoil of the spring 55 the leadingpoin't., oliv pjrojection 29 to the op*- posite side of the pleine of the leadino' point of the stationary projection 28 see ig. 6,

and thel ivedging action of the projections upon each other. operates to force the hollow 6o shaft and the parte carried thereby into inoperative position.

The diagram of circuit connections for the solenoids is as shown in Fig. 9. lt is rippen ent that by tliroding the three point sivitch' The`r I ment With the driven member 49.

33 to the right or left the corresponding solo oidv5 or 4 will become energized so that the counter shaft rotatesin one direction or ythe reverse, and Whenever the switch is moved to central position the counter shaft is brought to rest.

ln the diderential motor drive construction shown in Figs. 1,() and 11 the motor shaft 41 has ixed thereon two pinions 42, 43 of different sizes, which mesh with gears 44 and 45 mounted loosely between 'thrust collars 46 upon a shaft 47 journaled parallel to shaft 41. The gears 44 and 45 have conical friction surfaces 48 on the internal ieripheries of their rims, and fixed tothe shalt 47 between fears 44 and 45 is a male clutch member 49 liaving two friction surfaces50, 51 adapted to cooperate respectively with the friction surfaces 4S on the gears 44, 45 according to which gear is moved axially thereto.

Themeans for axially moving cach of the gears 44, consists of toggle links 52, 53 pivotally connected together and respccf tively to a lug .54 on the hub ofthe gear and a slip band 55 carried in a Groove in the thrust collar 46. is connected an actuating slide 56 which is carried in a groove in a spoke of the gear Wherel it is held in place by cross bars 57 aiid the upper end is folded over so'l as to frictionally engage the outside of said bars 57 and provided with a cam or Wedge-shaped proj ection 58. l'Nithin the rangeof travel of the projection l58 is a stationary projection 59 carried by an arm 60 pivoted to the frame of th'e machine and movable up. and down across the leading point of the projection 58 and resting at the ends of itsl movement against fixed stops 6'1, 62 so that when the stationary projection 59 is in lowered position against stops 61 the rotating projection 58 Willpassthereover and be raised into ele vated position as shown in Figs. 10 and 11 to disengage the gear from the driven clutchv member 4Q, and when the projection 59 is raised against the upper stop 62 the rotating projection 5S will 'pass thereunder and be forced down so as to straightcn'thc knuckle f joint and force the driving gearinto engage The arms may be operated by magnets 63 and gravity. The diagraln of electrical connections will be the same als shovvn'in Figf 9. 32 sufficiently to carry l do not desireto restrict myself to the particular form or arrangement of parts herein shown and described, since it is ap ai.

ent that theymay be'changed and modified 4without departing from my invention.

What l claim' as new and desire to secure by Lettersl Patent of the United States, is,-

1. The combination Wi th the driving and driven members oi a clutch, of an actuating part rotated l by said. driving member, stationary meanslor deilecting sind part from IOO I' its path of rotation, and means for transmittingltlie deflected motion of said part to one of t e clutch members.

2. The combination with the driving anddriven members of a clutch, of an actuating lpart rotated by said driving member, stathereof.

' 3. The combination with the driving and driven members of a clutch, of an actuating part positively connected to said rotating member, stationary means i or deflecting said actuating part from its path of rotation, and means for transmitting'said deflected motion .to one of the clutch members.

,44, The combination with the driving and drijven members of a. clutch, of an actuating Bart positively driven by said driving memer, astationary device adapted to deflect the actuating part, means for bringing said .v device and actuating part into engagin f rela# tion, and means to transmit the defected movement of the actuating part to one of the clutch members.

5. The con'ibination with the driving and driven members of a clutch, of an actuating part having an engaging projection and positively rotated by the driving member a stationary engaging part adapted when brought into the path of said projection to "move the actuating part, means whereby the engaging parts may be freely adjusted relatively to -each other., and means for transmitting the said actuating part and deflect it axially, and a connecting member between said actuating part and one of the clutch members whereby the axial movement ofthe former produces a corres ending movement of the latter.

7. he combination with the driving and vdriven members of a clutch, of' an actuating )art positlvelyrotated by said driving mem- )er and free to move transversely, a stationary device adapted to engage said actuating part to efl'ect its transverse movement, and a shaft'having operative engagement with said actuating part and carrying the driven member of the clutch.

v S. The combination with the driving and driven members oi'a clutch, of an actuating )art'positivcly rotated bv the driving member and free to move axially, a stationary device adapted to engage said actuating part to eli'ect its axial movement, and a shaft connected by a lost motion arrangement with the actuating part and carrying the driven member of the clutch. j 9. The combination with the driving and driven members of a clutch, of an actuating part rotated by the driving member and fric to move axially, a wedge-shaped projection earried-bysaid part, a stationary projection adapted to ei'igagethc wedge-shaped projection to effect axial movement of the actuating part, a shaft connected by a lost motion arrangement with said actuating part 4and carrying the driven Inember of the clutch, and means for moving said actuating part to engage upon one side or the other of thc stationary projection. l

In witness whereof, I have hereunto set my handthis thirty lirst day of October 1'905.

EDDY R. WHITNEY Witnesses:

JOHN A. MoMANius, Jr., HENRY O. WEsT-ENDARP. 

